linux-kernel - Re: [PATCH 3/3] perf/buildid-cache: Support --purge-all option

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Message-Id: <f921f16f-578a-955c-4301-e596adbdcd4b@linux.vnet.ibm.com>
Date:   Mon, 16 Apr 2018 15:10:40 +0530
From:   Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com>
To:     Masami Hiramatsu <mhiramat@...nel.org>
Cc:     acme@...hat.com, kstewart@...uxfoundation.org, tglx@...utronix.de,
        pombredanne@...b.com, linux-kernel@...r.kernel.org,
        peterz@...radead.org, mingo@...hat.com,
        alexander.shishkin@...ux.intel.com, jolsa@...hat.com,
        namhyung@...nel.org, uneedsihyeon@...il.com,
        kjlx@...pleofstupid.com,
        ravi Bangoria <ravi.bangoria@...ux.ibm.com>
Subject: Re: [PATCH 3/3] perf/buildid-cache: Support --purge-all option

Hi Masami,

On 04/16/2018 02:57 PM, Masami Hiramatsu wrote:
> On Mon,  9 Apr 2018 16:36:33 +0530
> Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com> wrote:
>
>> User can remove files from cache using --remove/--purge options
>> but both needs list of files as an argument. It's not convenient
>> when you want to flush out entire cache. Add an option to purge
>> all files from cache.
>>
>> Ex,
>>   # perf buildid-cache -l
>>     /tmp/a.out (8a86ef73e44067bca52cc3f6cd3e5446c783391c)
>>     /tmp/a.out.1 (ebe71fdcf4b366518cc154d570a33cd461a51c36)
>>   # perf buildid-cache -P -v
>>     Removing /tmp/a.out (8a86ef73e44067bca52cc3f6cd3e5446c783391c): Ok
>>     Removing /tmp/a.out.1 (ebe71fdcf4b366518cc154d570a33cd461a51c36): Ok
>>     Purged all: Ok
> Hmm, for purging all caches will be done by
>
> $ rm -rf ~/.debug
>
> Are there any difference?

No logical difference if you know it's ~/.debug where it goes. :)
I also used to do rm -rf earlier.

This option is for a perf users. But I'm fine if it's not really needed.
Will drop it.

Thanks,
Ravi